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· Private foundation

Wendell Family Foundation

Its FY2025 filing reports that it funds preselected organizations and did not take unsolicited requests; check the foundation's own site before ruling it out.

$903k
Granted FY2025still arriving
51
Grants FY2025still arriving
15
States reached
$260k
Largest
01What it funds
0198% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2017 to 2025.

Education$2.0MRecreation & Sports$1.7MSocial Science$405kFood & Nutrition$357kReligion$320kHealth$270kScience & Tech$190kArts & Culture$75kOther$0
02FY2025 · 51 grants

Where the money goes

Grants by size, and the largest recipients.

By grant size · FY2025

  • Under $10k36 grants · $93k
  • $10k–50k9 grants · $135k
  • $50k–250k5 grants · $415k
  • $250k+1 grant · $260k
$4,000
Median grant
15
States reached
$2.9M
Total assets
Largest grants
RecipientAmount
PRINCETON UNIVERSITY$260,000
GOLDEN GATE NATIONAL PARKS CONSERVANCY$185,000
ST PAUL'S EPISCOPAL CHURCH$78,500
UCSF FOUNDATION$51,000
JOHNS HOPKINS MEDICAL SCHOOL$50,000
SEASON OF SHARING FUND$50,000
HARVARD BUSINESS SCHOOL$25,000
HARVARD BUISNESS SCHOOL MBA CLASS OF 1976 INC$25,000
THE EXPLORATORIUM$25,000
THE LITTLE SCHOOL$10,000
AMERICAN INDIA FOUNDATION$10,000
MARIN COUNTRY DAY SCHOOL$10,000
SAN FRANCISCO BALLET$10,000
PARENTS ASSOCIATION OF KIDS INTO SPEAKING SPANISH$10,000
PRINCETON IN AFRICA$10,000
02The need
03

Does the money reach high-need areas?

Each grant placed by the hardship in its grantee’s ZIP, against the area’s typical level.

show:

Its human-services grants (FY17–24, $25k) land where the poverty rate runs at 11%, against an area that typically sits at 9%. 90% of those dollars go to grantees based in above-average-need neighborhoods. Most of its grants land in higher-need ZIPs.

area typical 9%SCHEUERMAN YOUTH FUND: $1k → 6%YOUNG MOMS: $500 → 6%WILLOW DOMESTIC VIOLENCE CENTER: $250 → 14%CHILDREN'S NUTRITION PROGRAM OF HAITI: $500 → 12%SCHEUERMAN YOUTH FUND: $1k → 6%ZANAAFRICA FOUNDATION: $263 → 14%EDUCARE DC: $500 → 14%EDUCARE DC: $500 → 14%EDUCARE DC: $500 → 14%EDUCARE DC: $500 → 14%EDUCARE DC: $500 → 14%EDUCARE DC: $500 → 14%OAKLAND LACROSSE CLUB: $1k → 10%OAKLAND LACROSSE CLUB: $1k → 10%AMERICAN NATIONAL RED CROSS: $3k → 14%JEWISH COMMUNITY CENTER OF SAN FRANCISCO: $2k → 10%AMERICAN RED CROSS: $1k → 14%OAKLAND LACROSSE CLUB: $515 → 10%JEWISH COMMUNITY CENTER OF SAN FRANCISCO: $1k → 10%JEWISH COMMUNITY CENTER OF SAN FRANCISCO: $1k → 10%THE NEW YORK WOMEN'S FOUNDATION: $1k → 17%NEW YORK WOMEN'S FOUNDATION: $500 → 17%JEWISH COMMUNITY CENTER OF SAN FRANCISCO: $1k → 10%HUCKLEBERRY YOUTH PROGRAMS: $250 → 10%COMPASS FAMILY SERVICES: $500 → 10%COMPASS FAMILY SERVICES: $500 → 10%CHILDREN'S COUNCIL OF SAN FRANCISCO: $250 → 10%CHILDREN'S COUNCIL OF SAN FRANCISCO: $250 → 10%YMCA OF SAN FRANCISCO: $250 → 10%YMCA OF SAN FRANCISCO: $250 → 10%YMCA OF SAN FRANCISCO: $250 → 10%RECLAIM CHILDHOOD: $150 → 10%AIM HIGH: $1k → 10%AIM HIGH: $1k → 10%AIM HIGH: $1k → 10%0%20%40%50%more need →
grant to an above-average-need area below average· circle size = grant amount
How this is measured
Matched: human-services grants are those whose grantee’s IRS cause code is Human Services. Placed by people below the poverty line in the grantee’s ZIP, averaged from the tracts in that ZIP.

Which US states its grants reach

ME
VT
NH
WA
ND
MN
MI
NY
MA
OR
NV
IN
PA
NJ
CT
RI
CA
CO
VA
MD
AZ
TN
DC
OK
AL
GA
TX
FL
How this is measured
US grants placed by each grantee’s ZIP, which can differ from where services are delivered. Need from public data (U.S. Census/ACS, CDC PLACES, Eviction Lab, USDA), shown as context about the area, never attributed to the funder’s giving.
03Its grantees
repeat funding

Who it funds again

Organizations funded in more than one year, against those funded once.

90%of every dollar goes to organizations it has funded before.
$5.2M · 114 repeat orgs$546k to everyone else

Grantees it renews have grown median revenue +27% since the first grant, against +25% for those funded once.

114 repeat relationships: 37 still active in FY2025, 77 since wound down; 14 grantees were first funded in FY2025 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

114
166

Total granted

$5.2M
$410k

Median revenue growth · since first grant

+27%
+25%

Still filing today

68%
46%

New vs renewed · share of each year

In FY2025, 85% of grant dollars renewed an existing relationship; $136k went to new ones.

50%100%’17’18’19’20’21’22’23’24’25
RenewedFirst-time

Where new relationships form · theme of each grantee’s first grant

’17’18’19’20’21’22’23’24’25
EducationHealthHuman ServicesArts & CultureRecreation & SportsPhilanthropyOther
How this is measured
First-time means a grantee’s first year in the filing window; renewed means funded in an earlier year too. The renewed share climbs naturally as a portfolio matures, so the signal is a year that bucks it (a wave of new grantees). The earliest year is left-censored: relationships that predate the data read as new. Theme is the grantee’s IRS cause.

Backed again, and grew

  • The Trustees of Princeton University
    9× · 2017–2025 · $1.0M · revenue +5%
  • CS
    CHRONICLE SEASON OF SHARING FUND
    9× · 2017–2025 · $345k · revenue +96%
  • JOHNS HOPKINS UNIVERSITY
    3× · 2022–2024 · $200k · revenue +26%

Funded once

  • FI
    FISHERS ISLAND CONSERVANCY INC
    one grant, 2019 · $50k · revenue -48%
  • U1
    UCC 1886 FOUNDATION
    one grant, 2022 · $35k
  • CD
    CHILDREN'S DAY SCHOOL INC
    one grant, 2023 · $30k · revenue -5%
How this is measured

Repeat means funded in two or more distinct years. Growth and survival are read from each grantee’s own subsequent IRS filings.

04Its field

Closest unfunded matches

The nonprofits that most resemble its grantees but are not funded by it, scored along the direction from the rest of the field toward the portfolio. A resemblance in what they say they do, not a recommendation.

1
Massachusetts Institute of Technology

The mission of mit is to advance knowledge and educate students in science, technology, and other areas of scholarship that will best serve the nation and the world in the 21st century.

Education
2
Silicon Schools Fund Inc

The mission of the silicon schools fund is to improve education through supporting the launch of excellent new schools, improving academic instruction in existing schools, and by funding some of the boldest innovations in education…

Education
3
The International School of San Francisco

Guided by the principles of academic rigor and diversity, the international school of san francisco offers programs of study in french and english to prepare its graduates for a world in which the ability to think critically and to…

Education
4
Ucsf Foundation Investment Company

The organization provides professional investment management services for endowed gifts and financial assets entrusted to the ucsf foundation.

Education
5
San Francisco Friends School

At san francisco friends school, students learn in a community grounded in the quaker values of reflection, integrity, peaceful problem-solving and stewardship. our teachers challenge students with a dynamic curriculum that inspires…

Education
6
The San Francisco School

A private school that cultivates and celebrates the intellectual, imaginative, and humanitarian promise of each student in a community that practices mutual respect, embraces diversity, and inspires passion for learning.

—
7
The Uc Davis Foundation

The mission of the uc davis foundation is to secure, steward and manage private gifts for uc davis.

Education
8
Boston Architectural College

The bac is committed to provide excellence in design education grounded in practice and accessible to diverse communities.

—
9
United States Naval Institute

Provide an independent forum for those who dare to read, think, speak, and write to advance the professional, literary, and scientific understanding of sea power and other issues critical to global security.

—
10
Golden Gate University

Golden gate university prepares individuals to lead and serve by providing high quality, practice-based educational programs in law, taxation, business and related professions - as a nonprofit institution - in an innovative and challenging…

Education
11
Association of California School Administrators

The association serves its members by creating resources that enable california school administrators to develop and apply creative leadership and management skills and in turn, improve the educational process for all students.

—
12
Uc Santa Barbara Foundation

The uc santa barbara foundation actively works to further the goals of the university of california, santa barbara. the foundation seeks to maintain and nurture the university's quality and distinction. on behalf of the campus, the…

Education
How this is measured
The grantee most central to the portfolio’s shape is Boys & Girls Clubs of San Francisco; the most unlike its peers is Demarest Swim Club. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
04the grantee network

173 grantees tracked through their own filings, 2017–2025.

Each grant beside the grantee’s revenue from every source, year by year.

How this is measured

Counted here: distinct organizations funded across 2017 to 2025, not grant rows in a single year, so this will not match the grant count on the cover. 173 of the 302 grantees resolved in that span have returns of their own we could reconcile.

Each grantee is resolved to its own IRS returns. Association, dated; never a causal claim.

1
Load-bearing (≥25% of a budget)
29
Early backer (in before they grew)
168/173
Grantees still filing
113/173
Grew since first funded

Where the money sits, by cause and then by grantee

GOLDEN GATE NATIONAL PARKS CONSERVANCY: $1,646,700 · EnvironmentGOLDEN GATE NATIONAL PARKS CONSERV…+5 more: $62,500 · EnvironmentThe Trustees of Princeton University: $1,011,617 · EducationThe Trustees of Princeton Univ…JOHNS HOPKINS UNIVERSITY: $200,000 · EducationJOHNS HOPKINS UNIVERSITYUNIVERSITY OF CALIFORNIA SAN FRANCISCO FOUNDATION: $103,750 · EducationUNIVERSITY OF CALIFORNIA SAN F…+23 more: $236,145 · Education+23 moreHARVARD BUSINESS SCHOOL: $400,000 · OtherHARVARD BUSINESS SCHOOLST PAUL'S EPISCOPAL CHURCH: $188,250 · OtherST PAUL'S EPISCOPAL CHURCHCOTTAGE 1886 FOUNDATION INC: $118,000 · OtherCOTTAGE 1886 FOUNDATION INCTHE HAMLIN SCHOOL: $109,000 · OtherTHE HAMLIN SCHOOLHARVARD COLLEGE FUND: $82,000 · Other+140 more: $839,041 · Other+140 moreCHRONICLE SEASON OF SHARING FUND: $345,000 · Food & Nutrition+2 more: $2,000 · Food & NutritionTHE EXPLORATORIUM: $163,000 · Arts & CultureSAN FRANCISCO BALLET ASSOCIATION: $15,000 · Arts & Culture+6 more: $18,200 · Arts & CulturePRATHAM USA: $40,000 · PhilanthropyREDWOOD CREDIT UNION COMMUNITY FUND INC: $20,000 · PhilanthropyPRINCETON IN AFRICA INC: $16,000 · Philanthropy+4 more: $5,000 · PhilanthropyGRASSROOT SOCCER INC: $53,000 · Recreation & SportsUS LACROSSE INC: $5,500 · Recreation & Sports+3 more: $3,650 · Recreation & Sports
Environment$1,709,200Education$1,551,512Other$1,736,291Food & Nutrition$347,000Arts & Culture$196,200Philanthropy$81,000Recreation & Sports$62,150

Showing the 200 largest grantees by grant value.

Each grantee by its size and the funder’s share of it; top left is load-bearing

25%50%75%100%$100k$1.0M$10M$100Mgrantee revenue →↑ funder's share of their budgetGOLDEN GATE NATIONAL PARKS CONSERVANCY: $1,646,700 over 9y, 0.8% of budgetThe Trustees of Princeton University: $1,011,617 over 9y, 0.0% of budgetCHRONICLE SEASON OF SHARING FUND: $345,000 over 9y, 0.4% of budgetJOHNS HOPKINS UNIVERSITY: $200,000 over 3y, 0.0% of budgetTHE EXPLORATORIUM: $163,000 over 9y, 0.1% of budgetCOTTAGE 1886 FOUNDATION INC: $118,000 over 3y, 38% of budgetTHE HAMLIN SCHOOL: $109,000 over 7y, 0.1% of budgetUNIVERSITY OF CALIFORNIA SAN FRANCISCO FOUNDATION: $103,750 over 4y, 0.0% of budgetGRASSROOT SOCCER INC: $53,000 over 9y, 0.2% of budgetFISHERS ISLAND CONSERVANCY INC: $50,000 over 1y, 12% of budgetPRATHAM USA: $40,000 over 3y, 0.1% of budgetPALO ALTO PLAYERS PENINSULA CENTER STAGE: $31,000 over 6y, 1.8% of budgetTHE AMERICAN INDIA FOUNDATION: $30,500 over 7y, 0.1% of budgetCHILDREN'S DAY SCHOOL INC: $30,000 over 1y, 0.1% of budgetTOWN SCHOOL FOR BOYS: $29,400 over 6y, 0.0% of budgetSan Francisco Education Fund: $28,545 over 7y, 0.3% of budgetFOUNDATION FOR STUDENT COMMUNICATIONINC: $27,500 over 9y, 0.8% of budgetPrinceton-Blairstown Center Inc: $25,500 over 9y, 0.3% of budgetISLES INC: $25,500 over 4y, 0.1% of budgetUNIVERSITY HIGH SCHOOL: $24,100 over 9y, 0.1% of budgetUTEC Inc: $22,000 over 9y, 0.1% of budgetSAN FRANCISCO UNIVERSITY HIGH SCHOOL: $21,200 over 6y, 0.0% of budgetREDWOOD CREDIT UNION COMMUNITY FUND INC: $20,000 over 1y, 0.1% of budgetEdwell Inc: $20,000 over 2y, 1.2% of budgetPAN-MASSACHUSETTS CHALLENGE INC: $17,185 over 9y, 0.0% of budgetPRINCETON IN AFRICA INC: $16,000 over 6y, 1.4% of budgetSAN FRANCISCO BALLET ASSOCIATION: $15,000 over 2y, 0.0% of budgetTHE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY: $14,000 over 4y, 0.0% of budgetSJOGREN'S FOUNDATION INC: $12,500 over 4y, 0.2% of budgetMARIN COUNTRY DAY SCHOOL: $10,000 over 1y, 0.0% of budgetSUNY NEW PALTZ FOUNDATION INC: $10,000 over 2y, 0.1% of budgetKIPP BAY AREA SCHOOLS: $10,000 over 1y, 0.0% of budgetPENNSYLVANIA HOSPITAL OF THE UNIVERSITY OF PENNSYLVANIA HEALTH SYSTEM: $10,000 over 1y, 0.0% of budgetFOUNDATION FOR EXCELLENCE INC: $9,750 over 2y, 0.3% of budgetLewis W Butler Foundation: $9,000 over 4y, 1.5% of budgetTHE CENTER FOR REPRODUCTIVE RIGHTS INC: $8,081 over 5y, 0.0% of budgetSAFE & SOUND: $8,000 over 3y, 0.0% of budgetTen Strands: $8,000 over 7y, 0.1% of budgetAMERICAN INSTITUTE OF CHEMICAL ENGINEERS: $7,000 over 3y, 0.0% of budgetTeach for America Inc: $7,000 over 3y, 0.0% of budgetUS LACROSSE INC: $5,500 over 5y, 0.0% of budgetCOACHING CORPS: $5,500 over 5y, 0.0% of budgetAIM HIGH: $5,500 over 7y, 0.2% of budgetFRIENDS OF ST STEPHEN'S YOUTH PROGRAMS INC: $5,250 over 5y, 0.2% of budgetPEER HEALTH EXCHANGE INC: $5,084 over 3y, 0.0% of budgetOCCIDENTAL COLLEGE: $5,000 over 1y, 0.0% of budgetTHE BRIDGE OF BOOKS FOUNDATION INC: $5,000 over 1y, 9.5% of budgetThe Houston Food Bank: $5,000 over 1y, 0.0% of budget
Grantee by grantee: a decade per organization, before and after funding

A decade per grantee: revenue shaded, grants as bars, all rows on one timeline.

  • Who funds GOLDEN GATE NATIONAL PARKS CONSERVANCY ↗
  • Who funds The Trustees of Princeton University ↗
  • Who funds CHRONICLE SEASON OF SHARING FUND ↗
  • Who funds JOHNS HOPKINS UNIVERSITY ↗
  • Who funds THE EXPLORATORIUM ↗
  • Who funds COTTAGE 1886 FOUNDATION INC ↗
  • Who funds THE HAMLIN SCHOOL ↗
  • Who funds UNIVERSITY OF CALIFORNIA SAN FRANCISCO FOUNDATION ↗
  • Who funds GRASSROOT SOCCER INC ↗
  • Who funds FISHERS ISLAND CONSERVANCY INC ↗
  • Who funds PRATHAM USA ↗
  • Who funds PALO ALTO PLAYERS PENINSULA CENTER STAGE ↗
  • Who funds THE AMERICAN INDIA FOUNDATION ↗
  • Who funds CHILDREN'S DAY SCHOOL INC ↗
  • Who funds TOWN SCHOOL FOR BOYS ↗
  • Who funds San Francisco Education Fund ↗
  • Who funds FOUNDATION FOR STUDENT COMMUNICATIONINC ↗
  • Who funds Princeton-Blairstown Center Inc ↗
  • Who funds ISLES INC ↗
  • Who funds UNIVERSITY HIGH SCHOOL ↗
  • Who funds UTEC Inc ↗
  • Who funds SAN FRANCISCO UNIVERSITY HIGH SCHOOL ↗
  • Who funds REDWOOD CREDIT UNION COMMUNITY FUND INC ↗
  • Who funds Edwell Inc ↗
  • Who funds PAN-MASSACHUSETTS CHALLENGE INC ↗
  • Who funds PRINCETON IN AFRICA INC ↗
  • Who funds SAN FRANCISCO BALLET ASSOCIATION ↗
  • Who funds THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY ↗
  • Who funds SJOGREN'S FOUNDATION INC ↗
  • Who funds MARIN COUNTRY DAY SCHOOL ↗

Co-funders

Grantmakers whose grantees overlap with this funder’s far more than size alone predicts. Closer means stronger alignment; arcs show where they also fund each other. Here they form a tightly interlocked group: most of these funders back each other's grantees too.

Marin Community FoundationCA42.3× affinity28 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: Marin Community Foundation · The San Francisco Foundation · Jewish Community Federation of San Francisco the Peninsula Marin & Sonoma · Silicon Valley Community Foundation · Robert and Dana Emery Family Foundation Rockefeller Trust Company · Lisa & Douglas Goldman Fund · The Goldman Sachs Charitable Gift Fund · McNabb Foundation · The Stanley S Langendorf Foundation · Gs Donor Advised Philanthropy Fund for Wealth Management Inc · Bothin Foundation · John Pritzker Family Fund

How this is measured
Affinity is a Gamma-Poisson posterior co-funding rate, re-centered on the typical rate, so thin evidence shrinks toward no signal. Overlap is association, not proof of shared intent.

How much its grantees rely on government

Each dot is one organization Wendell Family Foundation funds: left to right is the share of its income from government, bottom to top the share from Wendell Family Foundation. Bigger dots raise more.

2024
’20’21’22’23’24’25
no gov · 170%2%8%17%30%funder's share of their income ↑0%25%50%75%100%share of the org’s income from government →median 11%
  • Utec Inc: 46% of income from government
  • Reclaim Childhood Inc: 24% of income from government
  • Isles Inc: 21% of income from government
  • Johns Hopkins University: 12% of income from government
  • Manomet Inc: 12% of income from government
  • The Trustees of Princeton University: 11% of income from government
  • Institute for Advanced Study - Louis Bamberger & Mrs Felix Fuld Foundation: 7% of income from government
  • President and Fellows of Harvard College: 7% of income from government
  • Best Buddies International Inc: 4% of income from government
  • Rosie's Place Inc: 0% of income from government
  • Pan-Massachusetts Challenge Inc: 0% of income from government
  • Williams College: 0% of income from government
no gov moneyreceives it· size = income
17get no government money at all
33report government grants on their 990 we could not trace to a source (not plotted)
0rely on government for over half their income
typical government reliance, FY20–25
How this is measured
Government income is each org’s traced federal awards (USASpending grants and contracts) plus state payments (open checkbooks) as a share of its total revenue (IRS Form 990); the self-reported government-grant line (990 line 1e) is carried for cross-check: a grantee that reports government grants we could not trace to a source is left off the chart rather than shown as receiving none. An association, not a claim that a grant caused the public funding. Coverage is precision-first, a floor rather than a census; state records exist for 9 states, so a grantee outside them shows no state figure (dimmed) rather than a false zero. Federal award amounts are obligations, which can span years, so a single-year share is indicative. 990 filings lag 12 to 24 months.
05Through Plinth

Warm introductions · Powered by PlinthPlus

How do I get to Wendell Family Foundation?

Find your warmest path to Wendell Family Foundation through trustees and officers whose names appear on both boards. Search for your organization and Plinth traces the shortest route it can evidence.

Each link is a name appearing on two organizations’ public IRS 990 filings, matched on that name and, where the filings support it, on location. A same-state match has geographic support, which is a second matching feature rather than confirmation that the two are one person; a cross-state one is the likeliest to be two people who share a name. Every hop shows its tier, low-confidence and distant paths are held back rather than guessed, and it is worth confirming the person before you use the introduction.

On method. Every financial figure here is read from IRS e-file XML, the funder’s own 990/990-PF, and from the multi-year returns of the 302 grantees we resolved, each linked to its source. Grantee outcomes are each organization’s own program-service reporting (Form 990, Part III), read as association with funding, never as caused by it. Low-confidence name matches are suppressed rather than guessed. How we build these →

How this is measured
Each figure carries one of six labels. Filed is what the funder reported on its return. Official is another government record about an organization, such as a federal award or a charity register, joined by name where no shared identifier exists. Resolved is an identity we worked out where the filing named a recipient without an EIN, kept only above a measured confidence threshold. Computed is arithmetic over those, like themes, portfolio clusters and co-funder strength. Context is a statistic about a place rather than about an organization, which is what the need overlay is: it describes the area a grantee’s address sits in, not where its work lands. Inferred is drawn by a model from text, like the partnerships read out of public news and organization websites. Each is labeled where it appears.

Generated from the IRS Form 990-PF e-file return for fiscal year 2025, released 2025. Filings run roughly 12 to 24 months behind; figures are dated accordingly.

Source object · view filing

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